Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure

TAN Ying-hui; YAO Wen-jun; LI Pei-jun; ZHANG Guo-liang

doi:10.13296/j.1001-1609.hva.2012.03.024

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Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure

更新时间：2025-04-26

- Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure
- High VoltageApparatus Vol. 48, Issue 3, Pages: 117-122(2012)
- 作者机构：
  
  北京超高压公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2012.03.024
  CLC： TM772
- Published：2012
- 稿件说明：
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[1]檀英辉,姚文军,李佩军,张国亮.500kV变压器瓦斯保护误动分析及整改[J].高压电器,2012,48(03):117-122.

TAN Ying-hui, YAO Wen-jun, LI Pei-jun, et al. Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure[J]. High voltageapparatus, 2012, 48(3): 117-122.
[1]檀英辉,姚文军,李佩军,张国亮.500kV变压器瓦斯保护误动分析及整改[J].高压电器,2012,48(03):117-122. DOI： 10.13296/j.1001-1609.hva.2012.03.024.

TAN Ying-hui, YAO Wen-jun, LI Pei-jun, et al. Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure[J]. High voltageapparatus, 2012, 48(3): 117-122. DOI： 10.13296/j.1001-1609.hva.2012.03.024.

摘要

瓦斯保护是变压器的主保护

关系到变压器的安全运行。文中介绍了一起500 kV变压器重瓦斯保护误动经过

对瓦斯继电器的结构和动作原理进行了说明。通过调查、计算

分析出此次重瓦斯保护动作是由于呼吸器堵塞、储油柜内存在负压以及储油柜集气盒结构不合理等原因造成的误动作。同时

针对此次变压器重瓦斯保护动作事件

提出了此类事件的应急处理措施以及集气盒改造意见。

Abstract

For a malfunction of heavy gas protection of a 500 kV transformer

the structure and working principle of the gas relay are described.Investigation and calculation indicate that this malfunction of the gas relay is due to blockage of the dehydrating breather

negative pressure in the oil tank

and improper structure of the gas collection box.Corresponding emergency measure is put forward

and modification of the gas box is suggested.

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Related Author

GUO Peng

Related Institution

Danjiangkou Hydropower Plant,?Danjiangkou

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